def local_hash_big(block_header):
print "Lib Hash:", hashlib.sha256(hashlib.sha256(block_header).digest()).hexdigest()
my_data = midstate.calculateMidstate(block_header[0:64])
new_data = util.hex2bin('00000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000280')
second_head = block_header[64:76] + new_data
temp_hash = midstate.calculateMidstate( second_head, my_data, 64 )
print "Level 1: ", util.bin2hex(hashlib.sha256(temp_hash).digest())
print "Just Level 1:", util.bin2hex(temp_hash)
new_data = temp_hash + util.hex2bin('800000000000000000000000000000000000000000000000') + util.hex2bin('0000000000000100')
hash_calc = midstate.calculateMidstate( new_data )
print util.bin2hex(hash_calc)
def local_sha256(secondhalf, midstate_data, target_hash):
#TODO: make sure the nonce is started with 0x00000fff so that it can be started properly
print "Local sha256"
new_target = serial.get_target()
print "Target received:", new_target
nonce = 0
while nonce <= 0xffffffff:
nonce_str = chr(nonce & 0xff) + chr((nonce >> 8) & 0xff) + chr(
(nonce >> 16) & 0xff) + chr((nonce >> 24) & 0xff)
new_data = nonce_str + util.hex2bin(
'800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000280'
)
second_head = secondhalf + new_data
temp_hash = midstate.calculateMidstate(second_head, midstate_data, 64)
block_hash = hashlib.sha256(temp_hash).digest()
if util.block_check_target(util.bin2hex(block_hash), new_target):
print 'nonce_str: ', nonce_str
print 'Target hash found for nonce = ', nonce
print 'block_hash = ', util.bin2hex(block_hash)
print 'target_hash = ', new_target
return None, 0
nonce += 1
return None, 0
def main_test():
print('Some other testing...')
test_chunk = "0100000076C470C5F0B3AD4A9F619598B80090549E781AB575EA587F977000000000000064A03C10396CC7F820F8830614E94330C4FCA76642BC6E0ED8C2BC8F"
test_chunk = "00000001c570c4764aadb3f09895619f549000b8b51a789e7f58ea750000709700000000103ca064f8c76c390683f8203043e91466a7fcc40e6ebc428fbcc2d8"
test_midstate = midstate.calculateMidstate(test_chunk.decode('hex'))
print('Sanity midstate: %s' % test_midstate.encode('hex_codec'))
print('Should match: %s' % 'e772fc6964e7b06d8f855a6166353e48b2562de4ad037abc889294cea8ed1070')
print('or: %s' % '69fc72e76db0e764615a858f483e3566e42d56b2bc7a03adce9492887010eda8')
# main()
header_bin = header_hex.decode('hex')
first_hash = hashlib.sha256(header_bin).digest()
final_hash = hashlib.sha256(first_hash).digest()
print('Input: %s' % header_hex)
print('First hash: %s' % first_hash.encode('hex_codec'))
print('Final hash: %s' % final_hash.encode('hex_codec'))
first_bin = header_bin[:64]
first_midstate = be_calculateMidstate(first_bin)
rest_of_bin = header_bin[64:]
padding = ('80' + ''.join(['00' for x in range(45)]) + '0280').decode('hex')
print('First midstate: %s' % first_midstate.encode('hex_codec'))
print('Second input: %s' % (rest_of_bin + padding).encode('hex_codec'))
final_state = be_calculateMidstate(rest_of_bin + padding, state=first_midstate)
print('Final state one: %s' % final_state.encode('hex_codec'))
print('We want to match: %s' % first_hash.encode('hex_codec'))
print('Second hash with padding: %s' % (final_state.encode('hex_codec') + ('80' + ''.join(['00' for x in range(29)]) + '0100')))
solution_hash = be_calculateMidstate(final_state + ('80' + ''.join(['00' for x in range(29)]) + '0100').decode('hex'))
print('Solution: %s' % solution_hash[::-1].encode('hex_codec'))
def get_hash_info(self):
if self.debug:
new_data = util.hex2bin(
'00000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000280'
)
second_head = block_header[64:76] + new_data
data_temp = midstate.calculateMidstate(second_head, my_data, 64)
return None
def local_sha256_with_nonce( secondhalf, midstate_data, target_hash ):
print 'SHA with nonce'
new_target = serial.get_target()
nonce_str = util.hex2bin( serial.get_nonce() )
new_data = nonce_str + util.hex2bin('800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000280')
second_head = secondhalf + new_data
temp_hash = midstate.calculateMidstate( second_head, midstate_data, 64 )
block_hash = hashlib.sha256(temp_hash).digest()
print "target:", new_target
print util.bin2hex( block_hash )
def getwork(self, no_midstate=True):
'''Miner requests for new getwork'''
job = self.last_job # Pick the latest job from pool
# 1. Increase extranonce2
extranonce2 = job.increase_extranonce2()
# 2. Build final extranonce
extranonce = self.build_full_extranonce(extranonce2)
# 3. Put coinbase transaction together
coinbase_bin = job.build_coinbase(extranonce)
# 4. Calculate coinbase hash
coinbase_hash = utils.doublesha(coinbase_bin)
# 5. Calculate merkle root
merkle_root = binascii.hexlify(utils.reverse_hash(job.build_merkle_root(coinbase_hash)))
# 6. Generate current ntime
ntime = int(time.time()) + job.ntime_delta
# 7. Serialize header
block_header = job.serialize_header(merkle_root, ntime, 0)
# 8. Register job params
self.register_merkle(job, merkle_root, extranonce2)
# 9. Prepare hash1, calculate midstate and fill the response object
header_bin = binascii.unhexlify(block_header)[:64]
hash1 = "00000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000010000"
result = {'data': block_header,
'hash1': hash1}
if self.use_old_target:
result['target'] = 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000'
elif self.real_target:
result['target'] = self.target_hex
else:
result['target'] = self.target1_hex
if calculateMidstate and not (no_midstate or self.no_midstate):
# Midstate module not found or disabled
result['midstate'] = binascii.hexlify(calculateMidstate(header_bin))
return result
def debug_hash(self, nonce):
n_nonce = struct.pack("<L", nonce)
new_data = util.hex2bin(
'800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000280'
)
new_data = n_nonce + new_data
second_head = util.hex2bin(self.data_remaining) + new_data
data_temp = midstate.calculateMidstate(second_head,
util.hex2bin(self.midstate_hex),
64)
final_hash = hashlib.sha256(data_temp).digest()[::-1]
print DEBUG_STRING, util.bin2hex(final_hash)
# Check if it the block meets the target target hash
if util.block_check_target(final_hash, util.hex2bin(self.target_hex)):
return (final_hash, nonce)
return (None, nonce)
def fpga_miner_with_debug_data():
block_header_str = "000000202fa8edaec2e28b3b6a9f81b2f4dc572e3b76ba87ffd934fe8001000000000000821e03b6e528af7cdeea67e2c59373a4d6b351e036acf6a3f23712df3f08c2f5d0a88857e28a011a"
target_hash_str = "000000000000018ae20000000000000000000000000000000000000000000000"
block_header = util.hex2bin(block_header_str)
target_hash = util.hex2bin(target_hash_str)
my_data = midstate.calculateMidstate(block_header[0:64])
midstatesw = util.bin2hex(my_data)
targetsw = util.bin2hex(target_hash)
secondhalf = util.bin2hex(block_header[64:76])
if True:
targetsw = TARGET_REDUCE + targetsw[8:len(targetsw)]
target_hash = util.hex2bin(targetsw)
time_stamp = time.clock()
serial.write_data(secondhalf, midstatesw, targetsw)
time_elapsed = time.clock() - time_stamp
print "Time Elapsed( FPGA - MINER ):", time_elapsed
time_stamp = time.clock()
double_hash(block_header[:76], target_hash)
time_elapsed = time.clock() - time_stamp
print "Time Elapsed( PC - MINER ):", time_elapsed
def performance_measurement_for_different_difficulty():
block_header_str = "000000202fa8edaec2e28b3b6a9f81b2f4dc572e3b76ba87ffd934fe8001000000000000821e03b6e528af7cdeea67e2c59373a4d6b351e036acf6a3f23712df3f08c2f5d0a88857e28a011a"
target_hash_str = "000000000000018ae20000000000000000000000000000000000000000000000"
block_header = util.hex2bin(block_header_str)
target_hash = util.hex2bin(target_hash_str)
my_data = midstate.calculateMidstate(block_header[0:64])
midstatesw = util.bin2hex(my_data)
targetsw = util.bin2hex(target_hash)
secondhalf = util.bin2hex(block_header[64:76])
value = ["FFFFFFFF", "0FFFFFFF", "07FFFFFF", "00FFFFFF", "007FFFFF", "000FFFFF", "0007FFFF", "0000FFFF", "00007FFF",
"00000FFF", "000007FF", "000000FF", "0000007F", "0000000F"]
count = 0 #Increase the value of target by starting from
while(count < (len(value))):
targetsw = value[count] + targetsw[8:len(targetsw)]
target_hash = util.hex2bin(targetsw)
time_stamp = time.time()
serial.write_data(secondhalf, midstatesw, targetsw)
new_time_stamp = time.time()
time_elapsed = new_time_stamp - time_stamp
print "Time Elapsed( FPGA - Miner ):", time_elapsed
count += 1
def fpga_miner(block_template,
coinbase_message,
extranonce_start,
address,
timeout=False,
debugnonce_start=False,
debug=False):
# Add an empty coinbase transaction to the block template
if debug:
print ""
print "Algorithm start:"
print ""
coinbase_tx = {}
block_template['transactions'].insert(0, coinbase_tx)
# Add a nonce initialized to zero to the block template
block_template['nonce'] = 0
# Compute the target hash
target_hash = block_bits2target(block_template['bits'])
if debug == True:
print block_template['bits']
print "target_hash", util.bin2hex(target_hash)
# Initialize our running average of hashes per second
hps_list = []
# Loop through the extranonce
extranonce = extranonce_start
coinbase_script = coinbase_message + util.int2lehex(extranonce, 4)
coinbase_tx['data'] = tx_make_coinbase(coinbase_script, address,
block_template['coinbasevalue'])
coinbase_tx['hash'] = tx_compute_hash(coinbase_tx['data'])
# Recompute the merkle root
tx_hashes = [tx['hash'] for tx in block_template['transactions']]
block_template['merkleroot'] = tx_compute_merkle_root(tx_hashes)
# Reform the block header
block_header = block_form_header(block_template)
#Block header should be in big endian#
#local_hash_little(block_header)
#local_hash_big(block_header)
my_data = midstate.calculateMidstate(block_header[0:64])
midstatesw = util.bin2hex(my_data)
targetsw = util.bin2hex(target_hash)
secondhalf = util.bin2hex(block_header[64:76])
if True:
targetsw = TARGET_REDUCE + targetsw[8:len(targetsw)]
target_hash = util.hex2bin(targetsw)
if debug == True:
'''
This is used to checking the hash generation through the local information!!!
'''
new_data = util.hex2bin(
'00000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000280'
)
second_head = block_header[64:76] + new_data
data_temp = midstate.calculateMidstate(second_head, my_data, 64)
print "fpga_mine-> block_header:", util.bin2hex(block_header)
print "midstate_calc:[1]", util.bin2hex(data_temp)
print "fpga_mine->header_hash first round[1]", hashlib.sha256(
block_header).hexdigest()
print "fpga_mine-> header_hash:[2]", hashlib.sha256(
data_temp).hexdigest()
print "fpga_mine->header_hash two round[2]", hashlib.sha256(
hashlib.sha256(block_header).digest()).hexdigest()
return None, 0
time_stamp = time.clock()
serial.write_data(secondhalf, midstatesw, targetsw)
time_elapsed = time.clock() - time_stamp
print "Time Elapsed( FPGA - MINER ):", time_elapsed
time_stamp = time.clock()
double_hash(block_header[:76], target_hash)
time_elapsed = time.clock() - time_stamp
print "Time Elapsed( PC - MINER ):", time_elapsed
if SUBMIT_DATA:
block_submission(block_template, block_header, ser.get_nonce(),
target_hash)
return
def block_mine_with_midstate(block_template, coinbase_message, extranonce_start, address, timeout=False, debugnonce_start=False):
# Add an empty coinbase transaction to the block template
coinbase_tx = {}
block_template['transactions'].insert(0, coinbase_tx)
# Add a nonce initialized to zero to the block template
block_template['nonce'] = 0
# Compute the target hash
target_hash = block_bits2target(block_template['bits'])
# Mark our mine start time
time_start = time.clock()
# Initialize our running average of hashes per second
hps_list = []
# Loop through the extranonce
extranonce = extranonce_start
while extranonce <= 0xffffffff:
# Update the coinbase transaction with the extra nonce
coinbase_script = coinbase_message + int2lehex(extranonce, 4)
coinbase_tx['data'] = tx_make_coinbase(coinbase_script, address, block_template['coinbasevalue'])
coinbase_tx['hash'] = tx_compute_hash(coinbase_tx['data'])
# Recompute the merkle root
tx_hashes = [tx['hash'] for tx in block_template['transactions']]
block_template['merkleroot'] = tx_compute_merkle_root(tx_hashes)
# Reform the block header
block_header = block_form_header(block_template)
time_stamp = time.clock()
nonce = 0 if debugnonce_start == False else debugnonce_start
while nonce <= 0xffffffff:
# Update the block header with the new 32-bit nonce
block_header = block_header[0:76] + chr(nonce & 0xff) + chr((nonce >> 8) & 0xff) + chr((nonce >> 16) & 0xff) + chr((nonce >> 24) & 0xff)
header_str = bin2hex(block_header)
# Recompute the block hash
#block_hash = block_compute_raw_hash(block_header)
print "Header:", bin2hex(block_header)
download_hash = sha256_download.SHA256(block_header).hexdigest()
print "download_hash", download_hash
# First is trailing 1 bit, then padding
my_data = midstate.calculateMidstate(block_header[0:64])
length = 640
val = [b''.join((
block_header[64:80],
b'\x80',
b'\x00' * (55 - len(block_header[64:80])),
struct.pack('>LL', length >> 32, length & 0xffffffff),
))]
#print "val:", bin2hex(val)
print bin2hex(val[0])
data_new = midstate.calculateMidstate( val[0], my_data, 64 )
print "data_new:", bin2hex(data_new)
break
nonce += 1
extranonce += 1
break
# If we ran out of extra nonces, return none
hps_average = 0 if len(hps_list) == 0 else sum(hps_list)/len(hps_list)
return (None, hps_average)
def make_input(block_header):
midstate = calculateMidstate(binascii.unhexlify(block_header)[:64])
data = binascii.unhexlify(block_header)[65:76]
payload = midstate + data
print "Input: %s" % binascii.hexlify(payload)
def work(self, datastr, targetstr):
# decode work data hex string to binary
static_data = datastr.decode('hex')
static_data = bufreverse(static_data)
# the first 76b of 80b do not change
blk_hdr = static_data[:76]
# decode 256-bit target value
targetbin = targetstr.decode('hex')
targetbin = targetbin[::-1] # byte-swap and dword-swap
targetbin_str = targetbin.encode('hex')
target = long(targetbin_str, 16)
# pre-hash first 76b of block header
static_hash = hashlib.sha256()
static_hash.update(blk_hdr)
# calculate midstate
midstate_bin = calculateMidstate(datastr.decode('hex')[:64])
# send task to Avalon nano
icarus_bin = midstate_bin[::-1] + '0'.rjust(40, '0').decode('hex') + datastr.decode('hex')[64:76][::-1]
if settings['verbose'] == 1:
print 'send task:' + icarus_bin.encode('hex')
workpkg = icarus_bin.encode('hex')[:64]
work_bin = self.mm_package(TYPE_WORK, "01", "02", pdata = workpkg).decode('hex')
self.usbdev.write(self.endpout, work_bin)
workpkg = icarus_bin.encode('hex')[64:128]
work_bin = self.mm_package(TYPE_WORK, "02", "02", pdata = workpkg).decode('hex')
self.usbdev.write(self.endpout, work_bin)
# read nonce back
rdata = None
loop = 0
while (rdata == None):
try:
rdata = self.usbdev.read(self.endpin, 40)
except:
pass
time.sleep(0.01)
loop = loop + 1
if loop == 3:
break
if rdata == None or rdata[2] != 0x23:
print time.asctime(), "No Nonce found"
return (0xffffffff, None)
else:
if settings['verbose'] == 1:
print 'nonce:', binascii.hexlify(rdata)[12:20]
# encode 32-bit nonce value
nonce = (rdata[6] << 24) | (rdata[7] << 16) | (rdata[8] << 8) | rdata[9]
nonce = bytereverse(nonce)
nonce_bin = struct.pack("<I", nonce)
# hash final 4b, the nonce value
hash1_o = static_hash.copy()
hash1_o.update(nonce_bin)
hash1 = hash1_o.digest()
# sha256 hash of sha256 hash
hash_o = hashlib.sha256()
hash_o.update(hash1)
hash = hash_o.digest()
# quick test for winning solution: high 32 bits zero?
if hash[-4:] != '\0\0\0\0':
print time.asctime(), "Invalid Nonce"
return (0xffffffff, None)
# convert binary hash to 256-bit Python long
hash = bufreverse(hash)
hash = wordreverse(hash)
hash_str = hash.encode('hex')
l = long(hash_str, 16)
# proof-of-work test: hash < target
if l < target:
print time.asctime(), "PROOF-OF-WORK found: %064x" % (l,)
return (0xffffffff, nonce_bin)
else:
print time.asctime(), "PROOF-OF-WORK false positive %064x" % (l,)
return (0xffffffff, None)
def work(self, datastr, targetstr):
# decode work data hex string to binary
static_data = datastr.decode('hex')
static_data = bufreverse(static_data)
# the first 76b of 80b do not change
blk_hdr = static_data[:76]
# decode 256-bit target value
targetbin = targetstr.decode('hex')
targetbin = targetbin[::-1] # byte-swap and dword-swap
targetbin_str = targetbin.encode('hex')
target = long(targetbin_str, 16)
# pre-hash first 76b of block header
static_hash = hashlib.sha256()
static_hash.update(blk_hdr)
# calculate midstate
midstate_bin = calculateMidstate(datastr.decode('hex')[:64])
# send task to Avalon nano
icarus_bin = midstate_bin[::-1] + '0'.rjust(
40, '0').decode('hex') + datastr.decode('hex')[64:76][::-1]
if settings['verbose'] == 1:
print 'send task:' + icarus_bin.encode('hex')
workpkg = icarus_bin.encode('hex')[:64]
work_bin = self.mm_package(TYPE_WORK, "01", "02",
pdata=workpkg).decode('hex')
self.usbdev.write(self.endpout, work_bin)
workpkg = icarus_bin.encode('hex')[64:128]
work_bin = self.mm_package(TYPE_WORK, "02", "02",
pdata=workpkg).decode('hex')
self.usbdev.write(self.endpout, work_bin)
# read nonce back
rdata = None
loop = 0
while (rdata == None):
try:
rdata = self.usbdev.read(self.endpin, 40)
except:
pass
time.sleep(0.01)
loop = loop + 1
if loop == 3:
break
if rdata == None or rdata[2] != 0x23:
print time.asctime(), "No Nonce found"
return (0xffffffff, None)
else:
if settings['verbose'] == 1:
print 'nonce:', binascii.hexlify(rdata)[12:20]
# encode 32-bit nonce value
nonce = (rdata[6] << 24) | (rdata[7] << 16) | (
rdata[8] << 8) | rdata[9]
nonce = bytereverse(nonce)
nonce_bin = struct.pack("<I", nonce)
# hash final 4b, the nonce value
hash1_o = static_hash.copy()
hash1_o.update(nonce_bin)
hash1 = hash1_o.digest()
# sha256 hash of sha256 hash
hash_o = hashlib.sha256()
hash_o.update(hash1)
hash = hash_o.digest()
# quick test for winning solution: high 32 bits zero?
if hash[-4:] != '\0\0\0\0':
print time.asctime(), "Invalid Nonce"
return (0xffffffff, None)
# convert binary hash to 256-bit Python long
hash = bufreverse(hash)
hash = wordreverse(hash)
hash_str = hash.encode('hex')
l = long(hash_str, 16)
# proof-of-work test: hash < target
if l < target:
print time.asctime(), "PROOF-OF-WORK found: %064x" % (l, )
return (0xffffffff, nonce_bin)
else:
print time.asctime(), "PROOF-OF-WORK false positive %064x" % (l, )
return (0xffffffff, None)